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2020-01-31tcp: clear tp->data_segs{in|out} in tcp_disconnect()Eric Dumazet1-0/+2
tp->data_segs_in and tp->data_segs_out need to be cleared in tcp_disconnect(). tcp_disconnect() is rarely used, but it is worth fixing it. Fixes: a44d6eacdaf5 ("tcp: Add RFC4898 tcpEStatsPerfDataSegsOut/In") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Neal Cardwell <ncardwell@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-01-31tcp: clear tp->delivered in tcp_disconnect()Eric Dumazet1-0/+1
tp->delivered needs to be cleared in tcp_disconnect(). tcp_disconnect() is rarely used, but it is worth fixing it. Fixes: ddf1af6fa00e ("tcp: new delivery accounting") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Neal Cardwell <ncardwell@google.com> Acked-by: Yuchung Cheng <ycheng@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-01-31tcp: clear tp->total_retrans in tcp_disconnect()Eric Dumazet1-0/+1
total_retrans needs to be cleared in tcp_disconnect(). tcp_disconnect() is rarely used, but it is worth fixing it. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: SeongJae Park <sjpark@amazon.de> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-01-31mlxsw: spectrum_qdisc: Fix 64-bit division error in mlxsw_sp_qdisc_tbf_rate_kbpsNathan Chancellor1-1/+1
When building arm32 allmodconfig: ERROR: "__aeabi_uldivmod" [drivers/net/ethernet/mellanox/mlxsw/mlxsw_spectrum.ko] undefined! rate_bytes_ps has type u64, we need to use a 64-bit division helper to avoid a build error. Fixes: a44f58c41bfb ("mlxsw: spectrum_qdisc: Support offloading of TBF Qdisc") Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Tested-by: Ido Schimmel <idosch@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-01-31ionic: fix rxq comp packet type maskShannon Nelson1-1/+1
Be sure to include all the packet type bits in the mask. Fixes: fbfb8031533c ("ionic: Add hardware init and device commands") Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-01-31net: phy: at803x: disable vddio regulatorMichael Walle1-0/+11
The probe() might enable a VDDIO regulator, which needs to be disabled again before calling regulator_put(). Add a remove() function. Fixes: 2f664823a470 ("net: phy: at803x: add device tree binding") Signed-off-by: Michael Walle <michael@walle.cc> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-01-31net: mii_timestamper: fix static allocation by PHY driverMichael Walle2-1/+14
If phydev->mii_ts is set by the PHY driver, it will always be overwritten in of_mdiobus_register_phy(). Fix it. Also make sure, that the unregister() doesn't do anything if the mii_timestamper was provided by the PHY driver. Fixes: 1dca22b18421 ("net: mdio: of: Register discovered MII time stampers.") Signed-off-by: Michael Walle <michael@walle.cc> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-01-31net: mdio: of: fix potential NULL pointer derefernceMichael Walle1-3/+6
of_find_mii_timestamper() returns NULL if no timestamper is found. Therefore, guard the unregister_mii_timestamper() calls. Fixes: 1dca22b18421 ("net: mdio: of: Register discovered MII time stampers.") Signed-off-by: Michael Walle <michael@walle.cc> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-01-30net/core: Do not clear VF index for node/port GUIDs queryLeon Romanovsky1-2/+2
VF numbers were assigned to node_guid and port_guid, but cleared right before such query calls were issued. It caused to return node/port GUIDs of VF index 0 for all VFs. Fixes: 30aad41721e0 ("net/core: Add support for getting VF GUIDs") Reported-by: Adrian Chiris <adrianc@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-30y2038: sparc: remove use of struct timexArnd Bergmann2-16/+19
'struct timex' is one of the last users of 'struct timeval' and is only referenced in one place in the kernel any more, to convert the user space timex into the kernel-internal version on sparc64, with a different tv_usec member type. As a preparation for hiding the time_t definition and everything using that in the kernel, change the implementation once more to only convert the timeval member, and then enclose the struct definition in an #ifdef. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Julian Calaby <julian.calaby@gmail.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-30sparc64: add support for folded p4d page tablesMike Rapoport7-32/+84
Implement primitives necessary for the 4th level folding, add walks of p4d level where appropriate and replace 5level-fixup.h with pgtable-nop4d.h. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-30ide: make drive->dn read onlyDan Carpenter2-1/+5
The IDE core always sets ->dn correctly so changing it is never required. Setting it to a different value than assigned by IDE core is very likely to result in data corruption (due to wrong transfer timings being set on the controller etc.) Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Tested-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-30mptcp: Fix undefined mptcp_handle_ipv6_mapped for modular IPV6Geert Uytterhoeven3-12/+9
If CONFIG_MPTCP=y, CONFIG_MPTCP_IPV6=n, and CONFIG_IPV6=m: ERROR: "mptcp_handle_ipv6_mapped" [net/ipv6/ipv6.ko] undefined! This does not happen if CONFIG_MPTCP_IPV6=y, as CONFIG_MPTCP_IPV6 selects CONFIG_IPV6, and thus forces CONFIG_IPV6 builtin. As exporting a symbol for an empty function would be a bit wasteful, fix this by providing a dummy version of mptcp_handle_ipv6_mapped() for the CONFIG_MPTCP_IPV6=n case. Rename mptcp_handle_ipv6_mapped() to mptcpv6_handle_mapped(), to make it clear this is a pure-IPV6 function, just like mptcpv6_init(). Fixes: cec37a6e41aae7bf ("mptcp: Handle MP_CAPABLE options for outgoing connections") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-30net: drop_monitor: Use kstrdupJoe Perches1-6/+2
Convert the equivalent but rather odd uses of kmemdup with __GFP_ZERO to the more common kstrdup and avoid unnecessary zeroing of copied over memory. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-30udp: document udp_rcv_segment special case for looped packetsWillem de Bruijn1-0/+7
Commit 6cd021a58c18a ("udp: segment looped gso packets correctly") fixes an issue with rare udp gso multicast packets looped onto the receive path. The stable backport makes the narrowest change to target only these packets, when needed. As opposed to, say, expanding __udp_gso_segment, which is harder to reason to be free from unintended side-effects. But the resulting code is hardly self-describing. Document its purpose and rationale. Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-30mptcp: MPTCP_HMAC_TEST should depend on MPTCPGeert Uytterhoeven1-2/+4
As the MPTCP HMAC test is integrated into the MPTCP code, it can be built only when MPTCP is enabled. Hence when MPTCP is disabled, asking the user if the test code should be enabled is futile. Wrap the whole block of MPTCP-specific config options inside a check for MPTCP. While at it, drop the "default n" for MPTCP_HMAC_TEST, as that is the default anyway. Fixes: 65492c5a6ab5df50 ("mptcp: move from sha1 (v0) to sha256 (v1)") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-30mptcp: Fix incorrect IPV6 dependency checkGeert Uytterhoeven1-1/+1
If CONFIG_MPTCP=y, CONFIG_MPTCP_IPV6=n, and CONFIG_IPV6=m: net/mptcp/protocol.o: In function `__mptcp_tcp_fallback': protocol.c:(.text+0x786): undefined reference to `inet6_stream_ops' Fix this by checking for CONFIG_MPTCP_IPV6 instead of CONFIG_IPV6, like is done in all other places in the mptcp code. Fixes: 8ab183deb26a3b79 ("mptcp: cope with later TCP fallback") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-29io_uring: add support for epoll_ctl(2)Jens Axboe2-0/+72
This adds IORING_OP_EPOLL_CTL, which can perform the same work as the epoll_ctl(2) system call. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-01-29eventpoll: support non-blocking do_epoll_ctl() callsJens Axboe2-13/+42
Also make it available outside of epoll, along with the helper that decides if we need to copy the passed in epoll_event. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-01-29eventpoll: abstract out epoll_ctl() handlerJens Axboe1-20/+25
No functional changes in this patch. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-01-29io_uring: fix linked command file table usageJens Axboe3-14/+21
We're not consistent in how the file table is grabbed and assigned if we have a command linked that requires the use of it. Add ->file_table to the io_op_defs[] array, and use that to determine when to grab the table instead of having the handlers set it if they need to defer. This also means we can kill the IO_WQ_WORK_NEEDS_FILES flag. We always initialize work->files, so io-wq can just check for that. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-01-29Revert "MAINTAINERS: mptcp@ mailing list is moderated"Mat Martineau1-1/+1
This reverts commit 74759e1693311a8d1441de836c4080c192374238. mptcp@lists.01.org accepts messages from non-subscribers. There was an invisible and unexpected server-wide rule limiting the number of recipients for subscribers and non-subscribers alike, and that has now been turned off for this list. Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-29mptcp: handle tcp fallback when using syn cookiesFlorian Westphal5-3/+14
We can't deal with syncookie mode yet, the syncookie rx path will create tcp reqsk, i.e. we get OOB access because we treat tcp reqsk as mptcp reqsk one: TCP: SYN flooding on port 20002. Sending cookies. BUG: KASAN: slab-out-of-bounds in subflow_syn_recv_sock+0x451/0x4d0 net/mptcp/subflow.c:191 Read of size 1 at addr ffff8881167bc148 by task syz-executor099/2120 subflow_syn_recv_sock+0x451/0x4d0 net/mptcp/subflow.c:191 tcp_get_cookie_sock+0xcf/0x520 net/ipv4/syncookies.c:209 cookie_v6_check+0x15a5/0x1e90 net/ipv6/syncookies.c:252 tcp_v6_cookie_check net/ipv6/tcp_ipv6.c:1123 [inline] [..] Bug can be reproduced via "sysctl net.ipv4.tcp_syncookies=2". Note that MPTCP should work with syncookies (4th ack would carry needed state), but it appears better to sort that out in -next so do tcp fallback for now. I removed the MPTCP ifdef for tcp_rsk "is_mptcp" member because if (IS_ENABLED()) is easier to read than "#ifdef IS_ENABLED()/#endif" pair. Cc: Eric Dumazet <edumazet@google.com> Fixes: cec37a6e41aae7bf ("mptcp: Handle MP_CAPABLE options for outgoing connections") Reported-by: Christoph Paasch <cpaasch@apple.com> Tested-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-29mptcp: avoid a lockdep splat when mcast group was joinedFlorian Westphal1-2/+6
syzbot triggered following lockdep splat: ffffffff82d2cd40 (rtnl_mutex){+.+.}, at: ip_mc_drop_socket+0x52/0x180 but task is already holding lock: ffff8881187a2310 (sk_lock-AF_INET){+.+.}, at: mptcp_close+0x18/0x30 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (sk_lock-AF_INET){+.+.}: lock_acquire+0xee/0x230 lock_sock_nested+0x89/0xc0 do_ip_setsockopt.isra.0+0x335/0x22f0 ip_setsockopt+0x35/0x60 tcp_setsockopt+0x5d/0x90 __sys_setsockopt+0xf3/0x190 __x64_sys_setsockopt+0x61/0x70 do_syscall_64+0x72/0x300 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (rtnl_mutex){+.+.}: check_prevs_add+0x2b7/0x1210 __lock_acquire+0x10b6/0x1400 lock_acquire+0xee/0x230 __mutex_lock+0x120/0xc70 ip_mc_drop_socket+0x52/0x180 inet_release+0x36/0xe0 __sock_release+0xfd/0x130 __mptcp_close+0xa8/0x1f0 inet_release+0x7f/0xe0 __sock_release+0x69/0x130 sock_close+0x18/0x20 __fput+0x179/0x400 task_work_run+0xd5/0x110 do_exit+0x685/0x1510 do_group_exit+0x7e/0x170 __x64_sys_exit_group+0x28/0x30 do_syscall_64+0x72/0x300 entry_SYSCALL_64_after_hwframe+0x49/0xbe The trigger is: socket(AF_INET, SOCK_STREAM, 0x106 /* IPPROTO_MPTCP */) = 4 setsockopt(4, SOL_IP, MCAST_JOIN_GROUP, {gr_interface=7, gr_group={sa_family=AF_INET, sin_port=htons(20003), sin_addr=inet_addr("224.0.0.2")}}, 136) = 0 exit(0) Which results in a call to rtnl_lock while we are holding the parent mptcp socket lock via mptcp_close -> lock_sock(msk) -> inet_release -> ip_mc_drop_socket -> rtnl_lock(). >From lockdep point of view we thus have both 'rtnl_lock; lock_sock' and 'lock_sock; rtnl_lock'. Fix this by stealing the msk conn_list and doing the subflow close without holding the msk lock. Fixes: cec37a6e41aae7bf ("mptcp: Handle MP_CAPABLE options for outgoing connections") Reported-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-29mptcp: fix panic on user pointer accessFlorian Westphal1-18/+22
Its not possible to call the kernel_(s|g)etsockopt functions here, the address points to user memory: General protection fault in user access. Non-canonical address? WARNING: CPU: 1 PID: 5352 at arch/x86/mm/extable.c:77 ex_handler_uaccess+0xba/0xe0 arch/x86/mm/extable.c:77 Kernel panic - not syncing: panic_on_warn set ... [..] Call Trace: fixup_exception+0x9d/0xcd arch/x86/mm/extable.c:178 general_protection+0x2d/0x40 arch/x86/entry/entry_64.S:1202 do_ip_getsockopt+0x1f6/0x1860 net/ipv4/ip_sockglue.c:1323 ip_getsockopt+0x87/0x1c0 net/ipv4/ip_sockglue.c:1561 tcp_getsockopt net/ipv4/tcp.c:3691 [inline] tcp_getsockopt+0x8c/0xd0 net/ipv4/tcp.c:3685 kernel_getsockopt+0x121/0x1f0 net/socket.c:3736 mptcp_getsockopt+0x69/0x90 net/mptcp/protocol.c:830 __sys_getsockopt+0x13a/0x220 net/socket.c:2175 We can call tcp_get/setsockopt functions instead. Doing so fixes crashing, but still leaves rtnl related lockdep splat: WARNING: possible circular locking dependency detected 5.5.0-rc6 #2 Not tainted ------------------------------------------------------ syz-executor.0/16334 is trying to acquire lock: ffffffff84f7a080 (rtnl_mutex){+.+.}, at: do_ip_setsockopt.isra.0+0x277/0x3820 net/ipv4/ip_sockglue.c:644 but task is already holding lock: ffff888116503b90 (sk_lock-AF_INET){+.+.}, at: lock_sock include/net/sock.h:1516 [inline] ffff888116503b90 (sk_lock-AF_INET){+.+.}, at: mptcp_setsockopt+0x28/0x90 net/mptcp/protocol.c:1284 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (sk_lock-AF_INET){+.+.}: lock_sock_nested+0xca/0x120 net/core/sock.c:2944 lock_sock include/net/sock.h:1516 [inline] do_ip_setsockopt.isra.0+0x281/0x3820 net/ipv4/ip_sockglue.c:645 ip_setsockopt+0x44/0xf0 net/ipv4/ip_sockglue.c:1248 udp_setsockopt+0x5d/0xa0 net/ipv4/udp.c:2639 __sys_setsockopt+0x152/0x240 net/socket.c:2130 __do_sys_setsockopt net/socket.c:2146 [inline] __se_sys_setsockopt net/socket.c:2143 [inline] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2143 do_syscall_64+0xbd/0x5b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (rtnl_mutex){+.+.}: check_prev_add kernel/locking/lockdep.c:2475 [inline] check_prevs_add kernel/locking/lockdep.c:2580 [inline] validate_chain kernel/locking/lockdep.c:2970 [inline] __lock_acquire+0x1fb2/0x4680 kernel/locking/lockdep.c:3954 lock_acquire+0x127/0x330 kernel/locking/lockdep.c:4484 __mutex_lock_common kernel/locking/mutex.c:956 [inline] __mutex_lock+0x158/0x1340 kernel/locking/mutex.c:1103 do_ip_setsockopt.isra.0+0x277/0x3820 net/ipv4/ip_sockglue.c:644 ip_setsockopt+0x44/0xf0 net/ipv4/ip_sockglue.c:1248 tcp_setsockopt net/ipv4/tcp.c:3159 [inline] tcp_setsockopt+0x8c/0xd0 net/ipv4/tcp.c:3153 kernel_setsockopt+0x121/0x1f0 net/socket.c:3767 mptcp_setsockopt+0x69/0x90 net/mptcp/protocol.c:1288 __sys_setsockopt+0x152/0x240 net/socket.c:2130 __do_sys_setsockopt net/socket.c:2146 [inline] __se_sys_setsockopt net/socket.c:2143 [inline] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2143 do_syscall_64+0xbd/0x5b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sk_lock-AF_INET); lock(rtnl_mutex); lock(sk_lock-AF_INET); lock(rtnl_mutex); The lockdep complaint is because we hold mptcp socket lock when calling the sk_prot get/setsockopt handler, and those might need to acquire the rtnl mutex. Normally, order is: rtnl_lock(sk) -> lock_sock Whereas for mptcp the order is lock_sock(mptcp_sk) rtnl_lock -> lock_sock(subflow_sk) We can avoid this by releasing the mptcp socket lock early, but, as Paolo points out, we need to get/put the subflow socket refcount before doing so to avoid race with concurrent close(). Fixes: 717e79c867ca5 ("mptcp: Add setsockopt()/getsockopt() socket operations") Reported-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-29mptcp: defer freeing of cached ext until last momentFlorian Westphal1-2/+4
access to msk->cached_ext is only legal if the msk is locked or all concurrent accesses are impossible. Furthermore, once we start to tear down, we must make sure nothing else can step in and allocate a new cached ext. So place this code in the destroy callback where it belongs. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-29net: mvneta: fix XDP support if sw bm is used as fallbackLorenzo Bianconi1-3/+7
In order to fix XDP support if sw buffer management is used as fallback for hw bm devices, define MVNETA_SKB_HEADROOM as maximum between XDP_PACKET_HEADROOM and NET_SKB_PAD and let the hw aligns the IP header to 4-byte boundary. Fix rx_offset_correction initialization if mvneta_bm_port_init fails in mvneta_resume routine Fixes: 0db51da7a8e9 ("net: mvneta: add basic XDP support") Tested-by: Sven Auhagen <sven.auhagen@voleatech.de> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-29sch_choke: Use kvcallocJoe Perches1-1/+1
Convert the use of kvmalloc_array with __GFP_ZERO to the equivalent kvcalloc. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-29mptcp: Fix build with PROC_FS disabled.David S. Miller1-0/+2
net/mptcp/subflow.c: In function ‘mptcp_subflow_create_socket’: net/mptcp/subflow.c:624:25: error: ‘struct netns_core’ has no member named ‘sock_inuse’ Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-29MAINTAINERS: mptcp@ mailing list is moderatedRandy Dunlap1-1/+1
Note that mptcp@lists.01.org is moderated, like we note for other mailing lists. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Mat Martineau <mathew.j.martineau@linux.intel.com> Cc: Matthieu Baerts <matthieu.baerts@tessares.net> Cc: netdev@vger.kernel.org Cc: mptcp@lists.01.org Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-29drm/nouveau/fb/gp102-: allow module to load even when scrubber binary is missingBen Skeggs2-12/+32
Without relaxing this requirement, TU10x boards will fail to load without an updated linux-firmware, and TU11x will completely fail to load because FW isn't available yet. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2020-01-29drm/nouveau/acr: return error when registering LSF if ACR not supportedBen Skeggs1-1/+5
This fixes an oops on TU11x GPUs where SEC2 attempts to register its falcon, and triggers a NULL-pointer deref because ACR isn't yet supported. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2020-01-29drm/nouveau/disp/gv100-: not all channel types support reporting error codesBen Skeggs1-6/+17
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2020-01-29drm/nouveau/disp/nv50-: prevent oops when no channel method map providedBen Skeggs1-0/+2
The implementations for most channel types contains a map of methods to priv registers in order to provide debugging info when a disp exception has been raised. This info is missing from the implementation of PIO channels as they're rather simplistic already, however, if an exception is raised by one of them, we'd end up triggering a NULL-pointer deref. Not ideal... Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=206299 Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2020-01-29drm/nouveau: support synchronous pushbuf submissionBen Skeggs2-1/+11
This is useful for debugging GPU hangs. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2020-01-29drm/nouveau: signal pending fences when channel has been killedBen Skeggs3-1/+12
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2020-01-29drm/nouveau: reject attempts to submit to dead channelsBen Skeggs1-0/+2
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2020-01-29drm/nouveau: zero vma pointer even if we only unreference it rather than freeBen Skeggs1-1/+1
I'm not sure this affects anything, but best be safe. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2020-01-29drm/nouveau: Add HD-audio component notifier supportTakashi Iwai3-0/+119
This patch adds the support for the notification of HD-audio hotplug via the already existing drm_audio_component framework. This allows us more reliable hotplug notification and ELD transfer without accessing HD-audio bus; it's more efficient, and more importantly, it works without waking up the runtime PM. The implementation is rather simplistic: nouveau driver provides the get_eld ops for HD-audio, and it notifies the audio hotplug via pin_eld_notify callback upon each nv50_audio_enable() and _disable() call. As the HD-audio pin assignment seems corresponding to the CRTC, the crtc->index number is passed directly as the zero-based port number. The bind and unbind callbacks handle the device-link so that it assures the PM call order. Link: https://lore.kernel.org/r/20190722143815.7339-3-tiwai@suse.de Reviewed-by: Lyude Paul <lyude@redhat.com> Cc: Jaroslav Kysela <perex@perex.cz> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2020-01-28io_uring: support using a registered personality for commandsJens Axboe2-2/+25
For personalities previously registered via IORING_REGISTER_PERSONALITY, allow any command to select them. This is done through setting sqe->personality to the id returned from registration, and then flagging sqe->flags with IOSQE_PERSONALITY. Reviewed-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-01-28io_uring: allow registering credentialsJens Axboe2-7/+70
If an application wants to use a ring with different kinds of credentials, it can register them upfront. We don't lookup credentials, the credentials of the task calling IORING_REGISTER_PERSONALITY is used. An 'id' is returned for the application to use in subsequent personality support. Reviewed-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-01-28io_uring: add io-wq workqueue sharingPavel Begunkov2-15/+53
If IORING_SETUP_ATTACH_WQ is set, it expects wq_fd in io_uring_params to be a valid io_uring fd io-wq of which will be shared with the newly created io_uring instance. If the flag is set but it can't share io-wq, it fails. This allows creation of "sibling" io_urings, where we prefer to keep the SQ/CQ private, but want to share the async backend to minimize the amount of overhead associated with having multiple rings that belong to the same backend. Reported-by: Jens Axboe <axboe@kernel.dk> Reported-by: Daurnimator <quae@daurnimator.com> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-01-28io-wq: allow grabbing existing io-wqPavel Begunkov2-0/+9
Export a helper to attach to an existing io-wq, rather than setting up a new one. This is doable now that we have reference counted io_wq's. Reported-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-01-28io_uring/io-wq: don't use static creds/mm assignmentsJens Axboe4-30/+82
We currently setup the io_wq with a static set of mm and creds. Even for a single-use io-wq per io_uring, this is suboptimal as we have may have multiple enters of the ring. For sharing the io-wq backend, it doesn't work at all. Switch to passing in the creds and mm when the work item is setup. This means that async work is no longer deferred to the io_uring mm and creds, it is done with the current mm and creds. Flag this behavior with IORING_FEAT_CUR_PERSONALITY, so applications know they can rely on the current personality (mm and creds) being the same for direct issue and async issue. Reviewed-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-01-28Revert "drm/etnaviv: reject timeouts with tv_nsec >= NSEC_PER_SEC"Arnd Bergmann1-9/+0
This reverts commit 245595e83fbedda9e107eb0b37cec0ad07733778. Guido Günther reported issues with this patch that broke existing user space. Let's revert it for now and fix it properly later on. Link: https://patchwork.kernel.org/patch/11291089/ https://lore.kernel.org/lkml/20200121114553.2667556-1-arnd@arndb.de/ Cc: Guido Günther <agx@sigxcpu.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-01-28docs: filesystems: add overlayfs to index.rstMauro Carvalho Chehab1-0/+1
While the document is there, it is currently missing at the index file. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/3b8e7783b1fcc71e4f94af5ea8e5fa264392f8c4.1580193653.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-01-28docs: usb: remove some broken referencesMauro Carvalho Chehab2-8/+0
It seems that some files were removed from USB documentation. Update the links accordingly. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/00008303fde6b4e06d027d3b76ae7032614a7030.1580193653.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-01-28selftests/ftrace: fix glob selftestSven Schnelle1-1/+1
test.d/ftrace/func-filter-glob.tc is failing on s390 because it has ARCH_INLINE_SPIN_LOCK and friends set to 'y'. So the usual __raw_spin_lock symbol isn't in the ftrace function list. Change '*aw*lock' to '*spin*lock' which would hopefully match some of the locking functions on all platforms. Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-01-28scripts/dtc: Revert "yamltree: Ensure consistent bracketing of properties with phandles"Rob Herring1-21/+0
This reverts upstream commit 18d7b2f4ee45fec422b7d82bab0b3c762ee907e4. A revert in upstream dtc is pending. This commit didn't work for properties such as 'interrupt-map' that have phandle in the middle of an entry. It would also not work for a 0 or -1 phandle value that acts as a NULL. Signed-off-by: Rob Herring <robh@kernel.org>
2020-01-28of: Add OF_DMA_DEFAULT_COHERENT & select it on powerpcMichael Ellerman3-1/+10
There's an OF helper called of_dma_is_coherent(), which checks if a device has a "dma-coherent" property to see if the device is coherent for DMA. But on some platforms devices are coherent by default, and on some platforms it's not possible to update existing device trees to add the "dma-coherent" property. So add a Kconfig symbol to allow arch code to tell of_dma_is_coherent() that devices are coherent by default, regardless of the presence of the property. Select that symbol on powerpc when NOT_COHERENT_CACHE is not set, ie. when the system has a coherent cache. Fixes: 92ea637edea3 ("of: introduce of_dma_is_coherent() helper") Cc: stable@vger.kernel.org # v3.16+ Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de> Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org>
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